ELECTROCHEMICAL CORROSION PERFORMANCE OF COMMERCIALLY USED ALUMINIUM ENGINE BLOCK AND PISTON IN 0.1M NaCl

Kaiser, M. S.; Qadir, Md. Rakibul; Dutta, Swagata

doi:10.3329/jme.v45i1.24384

Cited by 13 publications

(13 citation statements)

References 7 publications

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“…Hypereutectic aluminium-silicon alloys are used in applications that require high resistance to wear, corrosion, good mechanical properties, low thermal expansion and reduced density 1,2 . Their properties are of greatest attention to the automobile industry for the fabrication of fuel-efficient vehicles using light weight components produced from these alloys such as connecting rods, pistons, cylinder liners and engine blocks [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Study of Mechanical and Wear Behaviour of Hyper-Eutectic Al-Si Automotive Alloy Through Fe, Ni and Cr Addition

et al. 2018

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Effect of Fe, Ni and Cr addition on the wear behavior of hyper-eutectic Al-Si automotive alloy has been studied. Dry sliding wear tests have been conducted using pin-on-disc wear testing machine under normal loads of 20N and constant sliding speed of 0.64 ms-1. Influence of Fe addition to the base alloy increases the wear rate due to the formation of needle beta intermetallics. Ni addition to the alloy does not impede formation of needle-like intermetallic compounds and has no positive effect on the modification of microstructure. Introducing of Cr to the iron-rich alloy changes the beta intermetallics into the modified alpha phases and therefore reduced the detrimental effect of iron. As a result it recovers the strength and wear properties of the experimental alloy. Wear test surfaces were examined by SEM and have shown that Cr added alloy improves wear resistance through mild and smooth abrasive grooves filled with oxides.

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Section: Introductionmentioning

confidence: 99%

Study of Mechanical and Wear Behaviour of Hyper-Eutectic Al-Si Automotive Alloy Through Fe, Ni and Cr Addition

et al. 2018

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“…Higher content of nickel (from 0.31 to 1.1 %) and lower concentration of iron (from 0.59 to 0.77 %) in our alloys could explain the observed difference in E corr compared to the engine block alloy containing 0.083 % of nickel and 0.795 % of iron. 40 However, higher content of magnesium in our alloys (from 1.3 to 1.43 %) with regard to commercially available piston alloy containing 0.492 %, 40 could be the reason for the shift in the corrosion potential of about 114 or 122 mV to more negative values. Cyclic voltammetry was used to study the influence of chlorides on the oxidation and reduction processes at the surface of cast Al-Si alloys.…”

Section: Resultsmentioning

confidence: 71%

“…39 The significant differences in the values of corrosion potential of the examined alloys were not observed, whereas the lowest value of corrosion current was determined for alloy C. Kaiser et al studied the corrosion behaviour of the commercially available aluminium alloys for the manufacturing of an engine block and piston in 0.1 M NaCl solution. 40 The potentiodynamic polarisation study has shown the corrosion potential (E corr ) as -764 mV for the engine block alloy and -622 mV for the piston alloy. 40 The values of the corrosion potential obtained for our alloys were from -735.9 to -744.0 mV, which indicated a shift to more positive values, compared to an engine block alloy, but more negative values concerning the piston alloy.…”

Section: Resultsmentioning

confidence: 99%

“…40 The potentiodynamic polarisation study has shown the corrosion potential (E corr ) as -764 mV for the engine block alloy and -622 mV for the piston alloy. 40 The values of the corrosion potential obtained for our alloys were from -735.9 to -744.0 mV, which indicated a shift to more positive values, compared to an engine block alloy, but more negative values concerning the piston alloy. Higher content of nickel (from 0.31 to 1.1 %) and lower concentration of iron (from 0.59 to 0.77 %) in our alloys could explain the observed difference in E corr compared to the engine block alloy containing 0.083 % of nickel and 0.795 % of iron.…”

Section: Resultsmentioning

confidence: 99%

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Mechanical properties and corrosion behaviour of Al-Si alloys for IC engine

Šćepanović

Asanović

Radonjić

et al. 2019

JSCS

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The paper describes the mechanical properties and the corrosion behaviour of three Al-Si alloys in 0.5 M NaCl solution. The alloys have exhibited similar values of hardness, but the highest tensile strength and the lowest elongation have shown the specimens of alloy with 11.38 % of silicon. Higher content of both copper and magnesium has contributed to better tensile strength and lower elongation of as-cast hypoeutectic alloys. The harmful effects of iron on mechanical properties of all alloys have been reduced to some extent by nickel and cobalt addition. The differences in the values of the open circuit potential of the examined alloys were insignificant. The thickness of the protective oxide layer has increased over time, and the layer has become very compact. Slight differences in the values of the corrosion potential of the alloys were determined, whereas the lowest value of the corrosion current was indicated for the hypereutectic alloy. The presence of intermetallic phases in the alloys has shown that the oxide film was not consistent. The severe pits have not been found at the surface of the corroded samples. Based on the obtained results, the examined alloys may be used for the manufacturing of the internal combustion engine parts.

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“…It is degradation of materials' properties due to interactions with environments. Metal is converted into another compound such as oxide or salt by that reaction and leads to loss in desirable properties [10][11][12]. When tin is added to copper it forms oxides very rapidly which can perform as a superficial shear-strength film and has the ability to attenuate corrosion.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Corrosion Properties of Ternary Al and Quaternary Zr Added Bell Metal in 0.1M NaCl Solution

Khan

Hossain

Nur

et al. 2021

JMEST

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The electrochemical corrosion property of ternary Al and quaternary Zr added Bell metal in 0.1M Sodium Chloride solution has been experimentally conducted at room temperature. Electrochemical impedance spectroscopy (EIS) method and Potentiodynamic polarization technique are used to carry out the electrochemical investigation. Microhardness test is also conducted for all three alloys and it reveals that Al addition increases the hardness of bell metal due to the formation of different intermetallic precipitates of Cu and Al. Optical Micrograph as well as Scanning Electron Micrograph have also been studied to characterize their surface condition. It is found that Zr addition refines the grain structure of the alloy and results in increase of hardness. The EIS study reveals that the corrosion resistance is seem to be augmented with the addition of ternary Al and quaternary Zr to bell metal. The potentiodynamic polarization curves disclose that both ternary Al added and quaternary Zr added alloy show better corrosion performance than the base bell metal alloy due to the formation of stable aluminium oxide film. The currentdensity (Icorr) of base bell metal showed higher value than both ternary Al added and quaternary Zr added bell metal alloys. The corrosion potential (Ecorr) and the open circuit potential (OCP) were seen to be moved to the more positive direction for the Al and Zr added alloys. Microstructure and SEM study of the alloys after corrosion revealed a formation of an oxide film on the surface of the ternary A and quaternary Zr added alloys, the probable cause of which is the presence of Al in the respective alloys.

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ELECTROCHEMICAL CORROSION PERFORMANCE OF COMMERCIALLY USED ALUMINIUM ENGINE BLOCK AND PISTON IN 0.1M NaCl

Cited by 13 publications

References 7 publications

Study of Mechanical and Wear Behaviour of Hyper-Eutectic Al-Si Automotive Alloy Through Fe, Ni and Cr Addition

Study of Mechanical and Wear Behaviour of Hyper-Eutectic Al-Si Automotive Alloy Through Fe, Ni and Cr Addition

Mechanical properties and corrosion behaviour of Al-Si alloys for IC engine

Electrochemical Corrosion Properties of Ternary Al and Quaternary Zr Added Bell Metal in 0.1M NaCl Solution

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